Machine for making metal binding for suitcases.



Patented Sept. 10, 1918.

4 SHEETSSHEEI I.

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MACHINE FOR MAKING METAL BINDING FOR SUITCASES.

APPLICATION FILED DEC- 7. I9I6- 1,278,167.

A. KIPNISS & M. P. NEUMANN.

MACHINE FOR MAKING METAL BINDING FOR SUITCASES.

APPLICATION FILED mac. 1. me.

1,278, 167. Patented Sept. 10,1918

4 SHEETSSHEET 2.

m P z JV 6/ 331. Mae/id attozmc uj a eumann A. KIPNISS & M. P. NEUMANN. MACHINE FOR MAKING METAL BlNDl-NG FOR SUITCASES.

APPLICATION FILED DEC. 7. I916.

1,278,167. Patented Sept. 10,1918.

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

ABRAHAM KIPNISS AND MAX PAUL NEUMANN, OF NEW YORK, N. Y., ASSIGNOBS TO BENJAMIN MARKOWI'IZ, OF NEW YORK, N. Y.

MACHINE FOR MAKING METAL BINDING FOR SUITGASES.

Specification of Letters Patent. Patented Sept. 10, 1918.

Application filed December 7, 1916. Serial No. 135,629.

To all whom it may concern:

Be it known that we, ABRAHAM KIrNIss, a citizen of the United States, and a resident of the city of New York, in the county of Kings and State of New York, and MAX PAUL NEUMANN, a citizen of the United States, and a resident of the city of New York, in the county of Queens and State of New York, have invented a certain new and useful Machine for Making Metal Binding for Suitcases, of which the following is. a specification.

This invention relates to machines for shaping sheet metal to a special form known as metal binding, which binding is used in the manufacture of suit cases and other receptacles.

The object is to provide a machine which will automatically bend sheet metal that is fed to it, so that a satisfactory binding is quickly formed.

The invention consists of a series of pairs of rollers which are arranged to impart forward movement to a strip of sheet metal, and to bend the edges thereof back nearly upon the strip. Fixed guide bars are provided, which receive the strip as it passes,

from between said rollers, and an oscillating bar located alongside of said guide bars, serves to bend one of the bent edges of said strip upon one of said guide bars, a trip mechanism being provided which causes said movement of the oscillating bar when the end of a certain length of said strip passes from said rollers to said fixed guide bars. The invention also consists of a device controlled by said trip mechanism, whereby a second strip of metal cannot be fed to said rollers while the first strip is being moved forward thereby.

In the accompanying drawings:

Figure l is a plan view of the machine.

Fig. 2 is a side elevation.

Fig. 3 is a section on the line IIIIII of Fig. 1.

Fig. 4 is a transverse section on the line IV-IV of Fig. 3, and showing the passage of a strip of sheet metal between a pair of feed rollers adapted for bending the edges thereof to obtuse angles from the strip.

Fig. 5 shows the passage of said strip between a pair of rollers adapted for bending the edges to right angles from the strip.

Fig. 6 shows the passage of said strip between a pair of rollers adapted for bending the edges to acute angles from the strip.

Fig. 7 is a transverse section on the line VII-VII of Fig. 3, and showing the passage of said strip between a pair of feed rollers adapted for bending the edges so that they stand parallel with the body of the strip.

Fig. 8 is-a section on the line VIIIVIII of Fig. 1.

Fig. 9 is a view similar to Fig. 8, with parts shown in a difierent position. i

Fig. '10 is a horizontal section approximately on the line XX of Fig. 9, parts being broken away.

Fig. 11 shows the strip when moved to rest in the fixed guide bars and against the oscillating bar, and mechanism for actuating the oscillating bar.

Fig. 12 is a perspective view ofthe strip after it is bent by movement of the oscillating bar.

Fig. 13 is a detail view showing the strip further bent when it has been removed from the machine and applied as metal binding to a suit case.

J ournaled in the frame 1 of the machine is a driving shaft 2 to which is secured V 12 secured to a shaft 13 to which a roller 14 is secured. Gear wheel 12 is in mesh with a gear wheel 15 secured to a shaft 16 to which a roller 17 is secured.

In mesh with gear wheel 3 is a gear wheel 18 secured to a shaft 19 to which a roller 20 is secured. Gear wheel 18 is in mesh with a gear wheel v21 secured to a shaft 22 to which a roller 23 is secured. Also in mesh with gear wheel 18 is a gear wheel 24 which is journaled on a fixed shaft 25. In mesh with gear'wheel 24 is a gear'whee-l 26 se cured to a shaft 27 to which is secured a roller 28. Gear wheel 26 is in mesh with a gear wheel 29 secured to a shaft 30 to which a roller 31 is secured. 7

It will be seen that by means of the gearing described, rotation of the driving shaft 2 causes rotation of the pair of rollers it and 17, pair 6 and 9, pair 20 and 28, and pair 28 and 31. The upper roller of each pair is forced down upon the lower roller by means of springs 32 which bear against sliding boxes 38 in which the shafts of the upper rollers are journaled.

strip of sheet metal 3t may be placed upon a horizontal support and passed forward between lateral guides 36 and between the upper and lower rollers of each of the series of pairs whereby forwarding movement is imparted to the strip. The rollers are shaped so that as the strip is moved forward between them, the edges of the strip are bent back to form the folds a.

The first pair of rollers 1a and 17 is provided with cooperating inclined surfaces 37 and 38 adapted for bending the edges of the strip to obtuse angles from the strip. The second pair of rollers 6 and 9 is provided with cooperating rectangular surfaces 39 and t0 adapted for further bending the edges of the strip to right angles therefrom. The third pair of rollers and adapted for further bending the edges to acute angles from the strip, this being accomplished by means of inwardly inclined sur faces t1 formed on the upper roller The fourth pair of rollers is adapted for further bending the edges so that they stand parallel with the strip, thereby forming the folds a. This is accomplished by means of cylindrical surfaces 42 formed on the upper roller 31. the folds a being forced between the guiding shoulders-l3 and formed on said pair of rollers.

Secured to a rock-shaft l5 journaled in the frame 1 is a lever 46 located between the first and second pairs of rollers and having a, roller 4'? mounted thereon which rests upon the moving strip 3%, as shown in Fig. 3. Also secured to rock-shaft i5 is a long arm to, the outer end of which is located between the second. and third pairs of roll ers, and upon the moving strip 3-4. To the arm of lever l6 opposite that on which roller s7 is mounted, is pivoted a gate 48. the outer end of which rests upon a support as, located above the support A passage 50 having a height approximately equal to the thickness of the strip 3%, is left between the two supports. lVhen the strip l-t is being fed forward by means of the series of pairs of rollers, as shown in Fig. 3, the strip serves to support the arm 46 and the end of lever d6 carrying the roller 4:7 and causes the gate 4.8 pivoted to the opposite end of the lever to be moved across the passage 50 thereby closing tie passage whereby a strip other than the one supporting the lever 46 cannot be admitted to the series of pairs of feed rollers.

To rock-shaft is secured an arm 5]. which adapted for engagement with a lever 52, whenever arm 46 or lever l6 ceases to be supported by the moving strip 3i. Lever 52 pivoted at 53 to a slide 54, and held against a fixed pin 55 by means of a spring Between the pivot and the end of lever 52 is a projection 57 which normally stands in the path of rollers 58 journaled on a wheel 59 secured to the driving shaft 2. The periphery of wheel 59 is provided with worm teeth 60 which engage corresponding teeth of a worm wheel 61 loosely mounted on a shaft 62.

While the moving strip 3t supports the lever .46 and arm 4.6, the rock-shaft l5 causes the arm 51 to be held out of engagement with the end of lever 52 as shown in Fig. 8. During this time the rollers 58 on wheel 59, by engagement with projection 57 on lever may cause movement of the lever upon its pivot In order to avoid stopping rotation of the driving shaft and feed rollers when no strip are to be supplied in the nrnfhine, arm 51 may. by means of chain 63 connected to arm 46 and a suitable ilXOCl support. be held out of engagement with lever 52 when no strip 3%: is being moved forward by the feed rollers.

When the strip 3st is moved forward so that its rear end moves away from beneath the end of arm 46, the arm will drop, thereby causing movement of tee rock-shaft 45, and consequent movement of gate 4-8 upward so that another strip may be passed through passage 50 to the feed rollers, and causing arm 51 to be moved into engagement with the free end of lever 52. Then during rotation of the wheel 59, one of the rollers 58 thereon by engagei-nent with the projection 57 will cause movement of the end of the lever that is pivoted to the slide 54-, thereby causing movement of the slide. Movement of the slide causes a spring (34 to be pressed against an arm 65 loosely mounted on the slide. until a pin 66 attached to the slide reaches the end of a slot 67 formed in the arm. Arm 65 will then be moved by the slide, and a roller 68 mounted on the arm and in engagement with an annular groove (39 formed in sliding collar 70 engaging a spline 71. on the shaft causes movement ofthe sliding collar from the position shown in Fig. 2 to the position shown in Fig. 9. This causes teeth 72 formed on the sliding collar T to engage corresponding teeth 73 formed on the hub of worm wheel 61. Rotation of worm wheel 61 then causes rotation of collar 70 and shaft 62. A friction surface 7% pressed against slide 54 by means of a spring 75 serves to hold the slide and parts connected therewith at rest in the position to which they are moved.

Secured to shaft 62 is a chain-wheel in which drives a chain 77 causing rotation of a chain-wheel 78 and a shaft 79 secured thereto. To the ends of shaft 79 are secured wheels 80 and 81, each wheel being provided with pins 82 which are placed eccentrically to the center of the wheel. The pins 82 are connected by links 83 to pins 84 placed eccentrically to the center of disks 85 and 86 which are seated in annular recesses87 formed in standards 88 secured to the main frame of the machine. The disks 85 and 86 are'cut away in their central part, so that the strip can be moved by the feed rollers forward through the disks. The disks are connected by a bar 89 having an attached bar 90 extending radially from the center ofthe disks. Weights 91 are attached to the bar 89, whereby rotary movement is imparted to the disks, the weights coming to rest on supports 92 and thereby causing the bar 90 to come to rest below one of the folds a and a portion of the strip. The standards 88 are connected on the side opposite to bars 89 and 90 by means of an upper bar 93 and a lower bar 94, a passage 95 being left between them through which the strip may pass. The upper bar 93 is provided with a. guide 96 through which the other fold a may pass, and one side of the bar is shaped so that its surface 97 extends radially from the center of the disks.

Wheel 80 is provided with a cam surface 98 which'occupies the position shown in Fig. '11 when the parts there shown are at rest. W'hen shaft 79 and wheels 80 and 81 secured thereto are rotated, the cam surface 98 moves into engagement with a roller 99 journaled in a vertical sliding-bar 100, thereby causing downward movement of the bar. The lower end of bar 100 is in engagement with an arm 101 secured to a rock-shaft 102, the arm being held in engagement with the bar by means of a spring 103. Secured torock-shaft 102-is a lever 104 having an arm 105 pivoted to its outer end. Connected to arm 105 is a rod 106 which passes through an eye 107 attached to lever 104. By means of a spring 108, a hook 109 forming part of arm 105 is pressed against the under side of the moving strip to the rear of the last pair of feed rollers 28 and 31. Then the rear end of the strip 34 shown'in Fig. 3, moves past the hook 109, spring 108 causes the hook to move up behind the end of the strip. Action of the downwardly moving bar 100 on arm 101 will then cause movement of the rock-shaft 102 and consequent movement of lever 104 and parts connected therewith, from the position shown in Fig. 3 to the position shown in Fig. 9, thereby causing the strip to be moved from the last pair of feed rollers forward into the fixed guides 95 and 96 and to rest above the'bar 90. The feed rollers have such relation to the center of the disks, that the center of the strip that is fed from the rollers stands to one side of the center of the disks, in order that the folded part b of the strip shown in Fig. 12 may have less length than the other part.

During the rotation of shaft 79 which causes cam 98 to actuate the vertical barlOO and thereby cause movement of hook 109 forward and back,'the eccentric pins 82 on wheels 80 and 81 will be moving over the dead center withreference to the'connecting rods 83 and eccentric pins 84 of disks 85 and 86, so that therewill then be practically no movement of the disks. During half of a revolution of collar 70, shaft 62, and consequent half revolution of shaft 79 and wheels and 81, the disks and parts con nected therewith will be moved from the position shown by full lines in Fig. 11 to the position shown by dotted lines, thereby causing the position of the strip above the bar 90 to be bent over against the in'cline97 of the bar 93, whereby the fold Z) is formed. A recess 110 is formed in the surface 97 for the purpose of receiving the fold a. Before the collar 70 reaches the end of another half of a revolution, a roller 111 journaled on the collar rides against a fixed inclined surface 112, see Fig. 10, which causes the collar to be moved out of engagement with rotating worm wheel 61, thereby stoppi'ng'rotation of shaft 62 and all parts driven thereby. This movement of collar 70 will cause slide 54 and parts connected therewith .to be moved to the position shown in Fig. 2 and the operations that have been described may then be repeated.

Another strip then being fed into the fixed guides 95 and 96 and above the bar 90 and against the rear. end of the previously bent strip, by means of the feed rollers will cause the completed product shown in Fig. 12 to be forced out of the machine.

In Fig. 13 is shown the manner in which the product shown in Fig. 12 is bent upon a portion 113 of a suit case.

Having described ourinvention, what we claim is: I

1. A machine of the character described, comprising mechanism for automatically bending over the edges of a strip of sheet metal; means forming a defined path through which a portion of the strip having said bent-over edges is fed, said means including a straight edge; one of said bentover edges and a material portion of the strip protruding beyond said straight edge; means for acting upon said protruding portion of the strip comprising an oscillatable bar so placed with respect to said straight edge that the bar is adapted for bending said protruding portion of the strip over said straight edge; means for actuating said oscillatable bar; and a trip mechanism adapted for controlling said means for actuating said oscillatable bar.

2. A machine of the character described, comprising continuously revolving rollers and mechanism for actuating them, said rollers adapted for feeding strips of sheet metal forward and serving to bend the edges thereof back nearly upon the strips; guide bars placed in the pat-h of said strips as they pass from said rollers, and spaced apart a distance equal to the thickness of said strips, and recessed to receive one of said bent edges; an oscillatable bar so placed with respect to said rollers that it is adapted for bending the other bent edge against one of said guide bars; means for actuating said oscillatable bar; and a trip mechanism adapted for controlling said means for actuating said oscillatalole bar.

3. A machine of the character described, comprising continuously revolving rollers and mechanism for actuating them, said rollers adapted for feeding strips of sheet metal forward and serving to bend the edges thereof back nearly upon the strips; guide bars placed in the path of said strips as they pass from said rollers, and spaced apart a distance equal to the thickness of said strips, and recessed to receive one of said bent edges; an oscillatable bar so placed with respect to said rollers that it is adapted for bending the other bent edge against one of said guide bars; the center about which the oscillatable bar moves being located to one side of the center of the strip.

a. A machine of the character described, comprising continuously revolving rollers and mechanism for actuating them; said rollers adapted for feeding strips of sheet metal forward and serving to bend the edges thereof back nearly upon the strips; means forming a defined path through which one bent edge and a portion of the strip having said bent-over edges is fed, said means in cluding a straight edge; an oscillatable bar so placed with respect to said straight edge that the bar/is adapted for bending the other portion of the strip and bent edge over said straight edge; means for actuating said oscillatable bar, said means including a trip mechanism which is controlled by passage of said strip between said feed rollers in such a manner that the trip mechanism becomes operative when said strip is moved away from said feed rollers.

53. A machine of the character described, comprising continuously revolving rollers and mechanism for actuating them, said rollers adapted for feeding a strip of sheet. metal forward and serving to bend the edges thereof back nearly upon the strip; a tri mechanism which is held out of action by means of said strip; a movable gate controlled by said trip mechanism, which will prevent a second strip of sheet metal from being fed to said rollers; means forming a defined path through which one bent edge and a portion of the strip having said bentover edges is fed, said means including a straight edge; an oseillatable bar so placed with respect to the said straight edge that the bar is adapted for bending the other portion of the strip and bent edge over said straight edge; means for actuating said oscillatable bar; said trip mechanism being set into action by passage of said strip away from said feed rollers and arranged to cause operation of said means for actuating said oscillatable bar.

('5. A machine of the character described, comprising continuously revolving rollers and mechanism for actuating them, said rollers adapte for feeding strips of sheet metal forward, and serving to bend the edges thereof back nearly upon the strips; means forming a defined path through which one bent edge and a portion of the strip having said bent-over edges is fed, said means including a straight edge which is located to one side of the center of the strip; an oscillatable bar so placed with respect to said straight edge that the bar is adapted for bending the other portion of the strip and bent edge over said straight edge; means for actuating said oscillatable bar; and a trip mechanism adapted for controlling said means for actuating said oscillatable bar.

7. A machine of the character described, comprising continuously revo ving rollers and mechanism for actuating them, said rollers adapted for feeding a strip of sheet metal forward and serving to bend the edges thereof back nearly upon the strip; a trip mechanism which is held out of action by means of said strip; devices controlled by said trip mechanism and adapted for imparting further forward motion to said strip as it passes from between said feed rollers; means forming a defined path through which one bent edge and a portion of the strip having said bent-over edges fed, said means including a straight edge; an oscillatable bar so placed with respect to said straight edge that. the bar is adapted for bending the other portion of the strip and bent edge over said straight edge; means for actuating said oscillatable bar, said means being controlled by said trip mechanism; said trip mechanism adapted to be set into action by passage of said strip away from said feed rollers and then causing action of said devices for imparting further forward movement of said strip, and causing said oscillating bar actuating means to be actuated.

Signed at New York city in the county of New York and State of New York this 29th day of November, A. D. 1916.

ABRAHAh i KIPNISS. MAX PAUL NEUMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. G. 

